00276nam a2200109Ia 4500082002000000100001800020245007800038260002500116300001500141500000500156700000500161  a515.35bC725.SB  aColton, D. L.  aSolution of boundary value problems by the method of integral operatorsb  aLondonbPitmanc1976  a148p. Ref.  a  a